Opening hours
Registration Desk and Reading Halls:
Until 2 August: 08.00-19.00, Monday-Friday; 09.00-16.00 Saturdays
4 to 17 August: Closed for readers due to maintenance and renovation;
Online and phone contact hours: 08.00-16.30, Monday-Friday
18 August to 7 September: 08.00-16.30, Monday-Friday
All other departments:
Mon – Fri: 08:00-16:30
Official holidays for all departments for 2025
| Date | Day of week | Official holiday |
|---|---|---|
| 1 January | Wednesday | New Year |
| 3 March | Monday | Bulgaria’s National Holiday |
| 18 – 21 April | Friday – Monday | Easter |
| 1 May | Thursday | International Labor day |
| 6 May | Tuesday | Day of Bravery and Bulgarian army |
| 24 – 26 May | Saturday – Monday | Day of the Holy Brothers Cyril and Methodius, of the Bulgarian alphabet, education and culture and of the Slavonic literature (24 May) |
| 6 – 8 September | Saturday – Monday | Unification Day (6 September) |
| 22 September | Monday | Bulgaria Independence day |
| 1 November | Saturday | Day of the National Enlighteners |
| 24 – 27 December | Wednesday – Saturday | Christmas |